1. Petroleum Industry Research & Engineering Co.
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This Self-Elevating Drilling Unit is a three-legged cantilever type jack-up drilling rig model PC-375 and is
consisting of a modified triangular hull with three (3) triangular truss work legs each fitted with spud cans at their
lower ends. The modified triangular hull is 66.0m long, 64.0m wide and 8.0m deep at the side. Rig is designed for
use in water depths up to 375 ft in moderate environment.
The quarter house is constructed above the main deck consists of a four (4) story building for a 130 man crew.
The heliport is mounted forward of the quarters house.
The drill floor is located on the substructure above the cantilever. The cantilever is capable of being skidded fore
and aft about 19.8m and the drill floor can be skidded port and starboard about 5.5m.
The intended area of operation is Persian Gulf.
GENERAL DESCRIPTION
Class society : Bureau VERITAS (BV)
Class notation : BV I HULL MACH Offshore Self Elevating Unit
MAIN DIMENSIONS
Hull length, Overall : 66.00 m
Hull Breadth, Overall : 64.00 m
Hull Depth : 8.00 m
Design Draft (approx.) : 4.50 m
Light weight : 13,600 tons (approx.)
Leg length : 164.6 m
AFT Leg Spacing, Transverse : 43.3 m
Leg Spacing, longitudinal : 39.3 m
Leg footing area : 220 m
2
Spud can diameter : 56 ft
Spud can load (avg.) : 7.5 kips/ft
2
Cantilever maximum longitudinal reach : 19.8 m (65 ft)
Cantilever max transverse reach : 5.48 m (18 ft)
MAIN PARTICULARS
Total Drilling Depth : 30,000 ft
Water Depths, maximum : 375 ft
Wind Speed, max (storm cond.) : 51.4 m/s (100 knots)
Wave height, storm condition : 15.24 m/15 sec [in open water/wave period]
Current speed, surface : 1.3 m/s
Air gap, max : 15.24 m (50 ft)
CAPACITIES
Static hook load : 680 tons
Rotary Load : 680 tons
Setback Load : 408 tons
Cantilever load : 1200 tons (max combined load)
Max preload weight : 20,000 tons
Preload : 9,500 m
3
Drill Water/Preload : 2,500 m
3
Fuel Oil : 794 m
3
Potable Water : 286 m
3
Liquid Mud : 667 m
3
Brine : 190 m
3
Base Oil : 143 m
3

2. Petroleum Industry Research & Engineering Co.
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Bulk barite/bentonite P-tanks : 200 m
3
Bulk cement P-tanks : 200 m
3
Surge (barite/bentonite) tank : 3 m
3
Sack store : 5000 sacks
ACCOMMODATION
Total Capacity : 130 persons
HELIDECK
Helicopter Type : S61N
Dimensions : 22.2 x 22.2 m
LEG JACKING SYSTEM
Quantity : 3 x 18 pinions
Normal Jacking : 280 tons/per gear
Preload Jacking : 415 tons/per gear
Max. Storm holding : 650 tons/per gear
Lifting Speed : 0.51 m/min
SKIDDING SYSTEM
Type : Hydraulic
Cantilever longitudinal skidding : 2x350 ton @ 10 m/hr average skidding speed
Drill Floor Transverse Skidding : 2x150 ton @ 10 m/hr average skidding speed
MACHINERY
Rig main Power : 5 x diesel engines, abt. 2000 BHP (total 10,000 BHP); 1200 RPM heat
exchanger sea water cooled, air start with 5 AC generators, abt. 2000
KVA, 690V, 3 ph, 60 Hz @ 0.7 PF
Emergency Power : 1 x diesel engine, 1200 BHP, 1800 RPM radiator cooled, air start &
battery start with one (1) AC alternator of 900 KVA, 480V, 3 phase at
60 Hz
Deck Pedestal Cranes : 2 sets, 50t @ 9.2 m outreach & 10 t @ 41.1 m outreach
Cementing Unit (3rd Party) : One set, diesel-driven, 15,000 psi WP
DRILLING EQUIPMENT
Derrick : 160 ft H, 35x35 ft base, 14x14 ft top, 1,500,000 lbs static hook load for
30,000 ft drilling
Drawworks : 3000 hp (3x1000 hp AC motors), 680 Mt & 30,000 ft drilling, acc. to
API 7 K, Zone 2 690V AC motors, 1-5/8" drill line.
Top drive : 1150 hp VFD drive AC motors, 750 tons, with pipe handler,
Rotary table 49-1/2" opening, Hyd. Driven, Max 350 rpm, 726 MT, 35000 ft/lb
torque, , acc. to API 7K
Travelling block : 680 MT, 7 sheaves for 1-5/8" drill line, acc. to API Spec 8C, API RP
9B
Drilling Instrumentations : display at DCS and Toolpusher’s office
MUD SYSTEM
Mud pumps : 3x triplex mud pumps each fitted with 2x1100 hp AC motors, max
W.P. 7,500 psi
Shale shakers : 2000 gpm mud flow, linear-motion,
Gumbo box : after diverter and then in connection with shale shaker header/
distributor box
Mud conditioner : one 24 x 4"-Cone Desilter and one 3 x 12" -cone Desander in one
Unit. Sized 1000 gpm

3. Petroleum Industry Research & Engineering Co.
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Liquid mud tanks : 4 x 10 m3 treatment tanks, 1x 8 m3 trip tank, 1x3.5m3, 10 mud pits
with total capa of 4200 bbls (667 m3)
Other : centrifuge, mud agitators, mud guns, mud mixing and charging
pumps, base oil pump, brine pump,
WELL CONTROL EQUIPMENT
Diverter : 1 x 500 psi W.P. for 49-1/2" rotary table
Annular : 18-3/4" 10,000 psi WP, H2S rated
Ram BOP : 2x 18-3/4" 15000 psi WP dual-ram preventers
BOP controls : 280 gal accumulators (abt. 1060 ltr) 1x f1uid tank 420 gal (1590 ltr.)
acc. to API Spec 16D
C&K manifold : 15,000 psi WP (Choke & kill)
AUXILIARY EQUIPMENT
Air compressors : 3 sets, rotary screw, 800 m3/hr (470 CFM) @ 10 bar each, 2 air-
dryers, 1x screw bulk air comp. @ 1200 m3/hr (705 CFM) 4 bar, 1x
diesel driven cold-start air comp 35 m3/hr (20 CFM) @ 10 bar
Water maker : 2 x 65 m3/day
Fixed Fire fighting : foam & deluge, Sprinkler, CO2
Gas detection sys : Combustible Gas Detection System, H2S Detection System
Safety system : 4x Lifeboat 65 person with davits, 6x Life rafts 25 person with
launching gear, Life preservers with lockers, 65x Work vests, 10 x life-
buoys with line & light,10x Buoy rack, Portable extinguishers, Personnel
transfer net, Breathing apparatus
Mooring system : 2x 35t pull, 65 t brake holding capacity El. winch, 700 m of 38 mm
steel wire, 2x 3.5 t HHP anchors
Communication sys : Radio station equip, antennas, INMARSAT, VHF, Radar, EPIRB,
Sound powered telephone, Hospital call alarm, Combined telephone
and paging, Refrigeration space alarm, Machinery alarm, General and
fire alarm, CO2 and sprinkler alarms, Drilling communication,
Entertainment TV & radio, helicopter waiting room monitor